The view controller you are looking for the is the SocializeActivityDetailsViewController class. It has an initWithActivity: method.

The like is made specifically for liking, so that text is not going to be changeable right now without a source edit.

Basically, you have an action that a user can perform which is visiting a location, and you are currently building this on the existing like functionality? We have had some other requests for similar behavior and may support something like this.

Hey, oh man i'm sorry i completely forgot to let you know how to use it. This one is not documented because it has been more or less a subcontroller for our public controllers, but since it's in the public headers i figured why not just let you try it out.